BODY BLUNDERS THAT WOMEN FIND MOST OFFENSIVE (AskMen.com)

• Man boobs: This is the area she most looks at when she sees you naked. It is also probably one of her favorite places to rest her head, nibble nipples and caress lovingly. A man’s chest is a treasured place for women, so having a posh pair of man boobs covered in carpet is not a turn-on — especially if your boobs are bigger than hers.
• Underdeveloped shoulders/arms: If you’re a bit puny or saggy, it can impact how manly you appear. If your shoulders and arms are lacking in definition or shape, she may look at you and wish you looked a bit stronger — a bit more like you could save her if armed bandits came to kidnap her.
• Hairy back: Beautiful, smooth backs are definite lady-pleasers — a nice back will get you places a sparkling personality and a full head of hair won’t. To all you men out there who have hairy backs, it’s not your fault that you have hairy genes, but truth be told, you would probably be getting more attention without the hair.
• Beer belly: Your stomach is basically the whole front of you, and this is what she predominantly sees when she looks at you. If you have a pot belly, get rid of it. Nobody likes a saggy, protruding stomach, and since this is where men tend to put on weight first (especially if you enjoy beer regularly), it is the main source of the excess weight. You don’t need abs of steel, but you do need to be tucked in.
• Gross teeth: Bad teeth will lose you more sex than you’ll ever know. Our smiles are our gifts to the world, and how we show pleasure. If your way of showing pleasure is to bare your stained, broken/missing/buck fangs to the world, perhaps you’re in need of some dental work. Bad teeth look like they smell, and you don’t want to kiss something that looks like it smells.